言語種別 英語 発行・発表の年月 2002 形態種別 その他論文 標題 Cluster of Massive Stars and Hot Cores in W49N   Cluster of Massive Stars and Hot Cores in W49N 執筆形態 共著 掲載誌名 The Proceedings of the IAU 8th Asian-Pacific Regional Meeting 巻・号・頁 Volume II,pp.171-172 著者・共著者 Miyawaki, R., Hasegawa, T., Hayashi, M.   Miyawaki, R., Hasegawa, T., Hayashi, M. 概要 We present 1"-2" resolution observations made with RAINBOW at 86 GHz in the continuum and SO (J=22-11) line. RAINBOW greatly increases the sensitivity of the interferometer system. The distribution of SO hot cores in W49N coincides with CH3CN (Wilner et al). SO hot cores are adjacent to ultra-compact HII regions (UCHII), i.e. clusters of massive stars. There is a large-scale velocity gradient. At the redshifted velocities, SO has a peak to the west of UCHII component G and north of B. On the other hand, the peak of SO is coincident with component G at blueshifted velocities.